HandEnergy, the brainchild of 19-year-old inventor Michael Vaga, allows you to charge your phone simply by rotating your hand, which activates the device’s gyroscope to produce energy that can then either be stored or used to immediately charge a mobile.

The device would be ideal for someone spending a long time away from a power socketCredit: HandEnergy

The kickstarter, which hoped to raise €50,000, raised €71,333 from people hoping to get their hands on one.